Home / 3,120,574.72-4,681,024.16-990,825.60

Finding the Fourth Proportional to 3,120,574.72, 4,681,024.16 and 990,825.60

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Solution

The fourth proportional to 3,120,574.72, 4,681,024.16 and 990,825.60 is: 1,486,289.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,574.72 : 4,681,024.16 = 990,825.60 : x
  2. Step 2: Convert to fraction form
    3,120,574.72/4,681,024.16 = 990,825.60/x
  3. Step 3: Cross multiply
    3,120,574.72x = 4,681,024.16 × 990,825.60
  4. Step 4: Simplify right side
    3,120,574.72x = 4,638,078,571,946.50
  5. Step 5: Solve for x
    x = 4,638,078,571,946.50/3,120,574.72
  6. Step 6: Final answer
    x = 1,486,289.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.